spi: Add Marvell Kirkwood SPI driver

This patch adds a SPI driver for the Marvell Kirkwood SoC's.

Signed-off-by: Prafulla Wadaskar <prafulla@marvell.com>
diff --git a/drivers/spi/Makefile b/drivers/spi/Makefile
index 1350f3e..7ffa47d 100644
--- a/drivers/spi/Makefile
+++ b/drivers/spi/Makefile
@@ -28,6 +28,7 @@
 COBJS-$(CONFIG_ATMEL_DATAFLASH_SPI) += atmel_dataflash_spi.o
 COBJS-$(CONFIG_ATMEL_SPI) += atmel_spi.o
 COBJS-$(CONFIG_BFIN_SPI) += bfin_spi.o
+COBJS-$(CONFIG_KIRKWOOD_SPI) += kirkwood_spi.o
 COBJS-$(CONFIG_MPC8XXX_SPI) += mpc8xxx_spi.o
 COBJS-$(CONFIG_MXC_SPI) += mxc_spi.o
 COBJS-$(CONFIG_SOFT_SPI) += soft_spi.o